CentOS 6
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OpenStack Havana - Set Floating IP
2013/10/22
 
It's possible to access to Virtual machine Instance to set Floating IP address.
[1] Change Nova's setting first to assign Floating IP address automatically.
[root@dlp ~(keystone)]#
vi /etc/nova/nova.conf
# line 999 : uncomment and change

auto_assign_floating_ip=
True
[root@dlp ~(keystone)]#
/etc/rc.d/init.d/openstack-nova-network restart

Stopping openstack-nova-network: [ OK ]
Starting openstack-nova-network: [ OK ]
[2] Set Floating IP address. For exmaple, assign 10.0.0.248/29 for Floating IP addresses in internal network 10.0.0.0/24.
[root@dlp ~(keystone)]#
nova-manage floating create --ip_range=10.0.0.248/29

[root@dlp ~(keystone)]#
nova-manage floating list

None    10.0.0.249      None    nova    eth0
None    10.0.0.250      None    nova    eth0
None    10.0.0.251      None    nova    eth0
None    10.0.0.252      None    nova    eth0
None    10.0.0.253      None    nova    eth0
None    10.0.0.254      None    nova    eth0
[3] Create a new instance and boot it, then Floating IP is assgined automatically like follows. In the example below, The "10.0.0.249" is just the Floating IP.
# create and boot Instance

[root@dlp ~(keystone)]#
nova boot --flavor 2 --image CentOS6 --security_group default CentOS_64_Pub

[root@dlp ~(keystone)]#
nova list

+------------+---------------+---------+------------+-------------+--------------------------------+
| ID         | Name          | Status  | Task State | Power State | Networks                       |
+------------+---------------+---------+------------+-------------+--------------------------------+
| 081bba5e-0 | CentOS_64     | SHUTOFF | None       | Shutdown    | network01=10.1.0.2             |
| 4cf02c97-b | CentOS_64_Pub | ACTIVE  | None       | Running     | network01=10.1.0.3, 10.0.0.249 |
+------------+---------------+---------+------------+-------------+--------------------------------+
[4] The Instances created before setting Floating IP, Floating IP does not assigned automatically, so it necessarry to set it manually like follows.
[root@dlp ~(keystone)]#
nova list

+------------+---------------+---------+------------+-------------+--------------------------------+
| ID         | Name          | Status  | Task State | Power State | Networks                       |
+------------+---------------+---------+------------+-------------+--------------------------------+
| 081bba5e-0 | CentOS_64     | SHUTOFF | None       | Shutdown    | network01=10.1.0.2             |
| 4cf02c97-b | CentOS_64_Pub | SHUTOFF | None       | Shutdown    | network01=10.1.0.3, 10.0.0.249 |
+------------+---------------+---------+------------+-------------+--------------------------------+

# assign "10.0.0.250" to "CentOS_64"

[root@dlp ~(keystone)]#
nova add-floating-ip CentOS_64 10.0.0.250

[root@dlp ~(keystone)]#
nova list

+------------+---------------+---------+------------+-------------+--------------------------------+
| ID         | Name          | Status  | Task State | Power State | Networks                       |
+------------+---------------+---------+------------+-------------+--------------------------------+
| 081bba5e-0 | CentOS_64     | SHUTOFF | None       | Shutdown    | network01=10.1.0.2, 10.0.0.250 |
| 4cf02c97-b | CentOS_64_Pub | SHUTOFF | None       | Shutdown    | network01=10.1.0.3, 10.0.0.249 |
+------------+---------------+---------+------------+-------------+--------------------------------+
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